cold turkey

US /ˌkoʊld ˈtɜːr.ki/
UK /ˌkoʊld ˈtɜːr.ki/
"cold turkey" picture
1.

きっぱりと, 突然, 完全に

the sudden and complete cessation of an addictive habit or substance rather than a gradual reduction

:
He quit smoking cold turkey after 20 years.
彼は20年ぶりにきっぱりと喫煙をやめた。
Going cold turkey on sugar can be tough.
砂糖をきっぱりとやめるのは大変かもしれない。